A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it. A current source is the dual of a voltage source. The term constant-current sink is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types. An independent current source sources or sinks a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.
Read more about Current Source: Background, Current and Voltage Source Comparison
Famous quotes containing the words current and/or source:
“Gradually the village murmur subsided, and we seemed to be embarked on the placid current of our dreams, floating from past to future as silently as one awakes to fresh morning or evening thoughts.”
—Henry David Thoreau (1817–1862)
“The family: I believe more unhappiness comes from this source than from any other—I mean the attempt to prolong family connection unduly, and to make people hang together artificially who would never naturally do so.”
—Samuel Butler (1835–1902)